how to start the letter

United States
November 8, 2006 7:40pm CST
i have to write a letter for school...Im writing a letter on behalf of Dr. William Black. I must have at least 2 paragraphs and no less then two lines per paragraph.I have to write the letter to Fisher Scientific Products and address the letter to Mr. Thomas Rock. In the letter i need to tell him to send me a new catalog and a price list.
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